Details

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BUY LM2984CT https://www.utsource.net/itm/p/968370.html
LM2984C Microprocessor Power Supply System

Parameter	Symbol	Min	Typical	Max	Unit
Input Voltage	VIN	2.7	-	16	V
Output Voltage	VOUT	1.25	-	13.8	V
Output Current	IOUT	-	1.0	1.5	A
Dropout Voltage	VDROPOUT	-	0.5	1.0	V
Quiescent Current	IQ	-	10	20	mA
Load Regulation	-	-	0.01	0.1	%
Line Regulation	-	-	0.01	0.1	%
Thermal Shutdown	TSD	-	160	-	°C
Operating Temperature	TOPR	-40	-	125	°C
Storage Temperature	TSTG	-65	-	150	°C

Instructions for Using the LM2984CT:

1. Input Voltage (VIN):

   • Ensure the input voltage is within the range of 2.7V to 16V.
   • The input voltage should be at least 1.5V higher than the desired output voltage to ensure proper regulation.

2. Output Voltage (VOUT):

   • The output voltage can be adjusted using external resistors R1 and R2.
   • Use the formula: ( V_ = 1.25 left(1 + fracright) ).

3. Output Current (IOUT):

   • The device can provide up to 1.5A of output current, with a typical output of 1.0A.
   • Ensure the load does not exceed the maximum output current to avoid overheating.

4. Dropout Voltage (VDROPOUT):

   • The dropout voltage is the difference between the input and output voltages when the regulator is operating near its limit.
   • Keep the dropout voltage in mind to ensure efficient operation, especially at high output currents.

5. Quiescent Current (IQ):

   • The quiescent current is the current consumed by the regulator itself.
   • It typically ranges from 10mA to 20mA.

6. Load Regulation:

   • The load regulation is the change in output voltage due to changes in load current.
   • It is typically very low, around 0.01% to 0.1%.

7. Line Regulation:

   • The line regulation is the change in output voltage due to changes in input voltage.
   • It is also very low, around 0.01% to 0.1%.

8. Thermal Shutdown (TSD):

   • The device will shut down if the temperature exceeds approximately 160°C to prevent damage.
   • Ensure adequate heat dissipation to avoid thermal shutdown.

9. Operating Temperature (TOPR):

   • The device is designed to operate in temperatures ranging from -40°C to 125°C.
   • Ensure the ambient temperature is within this range to maintain reliable operation.

10. Storage Temperature (TSTG):

    • The device can be stored in temperatures ranging from -65°C to 150°C.
    • Avoid exposing the device to extreme temperatures for extended periods.

11. Capacitor Selection:

    • Use appropriate input and output capacitors to stabilize the regulator and filter out noise.
    • Typical values are 10μF for the input capacitor and 10μF for the output capacitor.

12. PCB Layout:

    • Ensure a good thermal path for heat dissipation, such as a large copper area or heatsink.
    • Keep the input and output capacitors close to the regulator to minimize inductance and improve stability.

By following these guidelines, you can ensure optimal performance and reliability of the LM2984CT in your application.

(For reference only)